| |
Format name
: Tracker Packer v3
Created by : Crazy Crack / Complex (1993-1994)
Sources :
* Three TP2 file sent by Gryzor (thx !)
* Three TP2 file sent by Gryzor (thx !)
Note : It's the same format as the version
2 save for the repacking of the notes. I guess it was done for the replayer
because this version does not gain one single byte. I had to fight hard
to understand this new packing ... I cant figure out how Crazy Crack managed
to enhance his replayer with such a way of packing !
|
OFFSET
|
SIZE (bytes)
|
COMMENT
|
|
0
8
1Ch
-
-
|
8
14h
4
-
-
|
- ID "CPLX_TP3"
- title
- (NOS) Number of sample (*8). Also, that's the size of the whole
sample headers |
The following is repeated NOS times
with 8 bytes description for one sample
|
1Eh
1Fh
20h
22h
24h
|
1
1
2
2
2
|
- Finetune (0 -> F)
- Volume (0 - 40h)
- Sample Size / 2
- Loop Start / 2
- Loop Size / 2
|
|
1Eh+8*NOS
1Fh+8*NOS
20h+8*NOS
-
20h+8*NOS
+ PLS*2
-
-
-
-
-
-
-
-
20h+8*NOS
PLS*2
+NOP*8
22h+8*NOS
PLS*2
+NOP*8
-
-
-
-
|
1
1
PLS*2
-
NOP*8
-
-
-
-
-
-
-
-
-
2
-
-
?!?
-
-
-
-
-
-
|
- ?!? ($00)
- (PLS) Pattern list size
- The pattern list. Each number of pattern is *8 !
- (NOP stands for the REAL number of pattern which value is known
by getting the highest value in the previous table and by adding
1 since the first is 0) Track table per pattern. Each SAVED pattern
is made of 4 tracks and here are the addresses of each track. This
is a table of words. The first address is $0000!. To get the real
track address, add to the present value : (34+8*NOS+2*PLS+NOP*8)
- ?!?
-
-
- Tracks datas. Each track is saved one after another. It consists
of 64 possible notes. the size of each track is variable and is
between 1 byte and 300h bytes. Here follows the whole lot of cases
one can find in the track data (the note packing) |
Note Packing :
* case 1 :
value
/ \
| |
1100-0000
||
if these bits are set, you have to bypass (80h-value) bytes
for those are empty notes
|
* case 2 :
-description bit set to 0
/
|
1000-0000 0000-0000
| | | | |
| \ / \ /
| effect effect value
\
-description bit set to 1
|
* case 3 (No effect):
- sample number
/ /\
| | |
0000-0000 0000-0000
| | | | |
/ \ / \/
| relative effect
| note
| number
|------------description bit set to 0
Note: effect, here, is EMPTY !
Note2: To get the real note number, here, you have
to NOT this value, or you can do that:
result = 7Fh - byte1
|
* case 4:
- sample number
/ /\
| | |
0000-0000 0000-0000 0000-0000
| | | | | | |
/ \ / \/ \ /
| relative effect effect
| note value
| number
|------------description bit set to 0
|
For all those cases:
the arpeggio (0) effect has been remapped to 8
Note that all the volume slide commands (5,6,A) are signed !. Here
an example: A 01 -> A 10 or A FF -> A 01 etc. .
relative note number: (Protracker)
C-1 to B-1 : 856,808,762,720,678,640,604,570,538,508,480,453
C-2 to B-2 : 428,404,381,360,339,320,302,285,269,254,240,226
C-3 to B-3 : 214,202,190,180,170,160,151,143,135,127,120,113
|
become : (TP3)
C-1 to B-1 : 01,02,03,04,05,06,07,08,09,0a,0b,0c
C-2 to B-2 : 0d,0e,0f,10,11,12,13,14,15,16,17,18
C-3 to B-3 : 19,1a,1b,1c,1d,1e,1f,20,21,22,23,24 |
Follow Sample datas stored like
Protracker. Nothing is packed..
Note: As in NoisePacker v3, the sample data
address MUST be even !. It means you have to bypass one byte after reading
the tracks datas if the address where you are is uneven
Note: Tracker Packer 3.1 (the original packer)
puts two empty bytes at the end of every module it converts. No matter
the MOD I converted, these two bytes are always here ...
|
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